=(-1/30)/[(2/3+1/6)-(1/10+2/5)]
=(-1/30)/[(4/6+1/6)-(1/10+4/10)]
=(-1/30)/(5/6-5/10]
=(-1/30)/(5/6-3/6)
=(-1/30)/(2/6
=-3/10
=(-1/30)/[(4/6+1/6)-(1/10+4/10)]
=(-1/30)/(5/6-5/10]
=(-1/30)/(5/6-3/6)
=(-1/30)/(2/6
=-3/10
温馨提示：内容为网友见解，仅供参考
无其他回答
相似回答
